JP2009137703A - Carrying device for signature - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying device for signatures capable of improving signature receiving/delivering accuracy between cylinders. <P>SOLUTION: The carrying device for signatures is provided with a folding cylinder 22 having needles 33 for holding a cut web W and insertion knives 34; a gripping cylinder 23 opposing to the folding cylinder 22 and having a gripping part 35 for forming a signature S by changing gripping of the cut web W held by the needles 33 to fold the cut web W between the insertion knives 34 and the gripping part 35; and a deceleration cylinder 24 opposing to the gripping cylinder 23 and having a gripping part 38 for receiving the signature S held by the gripping part 35. A rotating phase change device 4 for changing the rotating phase of the deceleration cylinder 24 with respect to the rotating phase of the gripping cylinder 23 is provided between the gripping cylinder 23 and the deceleration cylinder 24. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a conveyance device that conveys a signature from a cylinder on the upstream side in the signature (web) conveyance direction to a cylinder on the downstream side in the signature conveyance direction between adjacent cylinders in the parallel folding device of the folding machine.

  A web-fed rotary printing machine includes a folding machine that cuts a web that has been dried and cooled after printing into a predetermined length and folds the cut web in a width direction or a length direction to form a signature from the web. Is provided. The signatures folded by this folding machine are discharged outside the machine by a paper discharge device provided on the most downstream side in the signature conveying direction.

  In such a folding machine, for example, a former folding device that half-folds the web in the width direction, the web after cutting by a plurality of cylinders is half-folded in the length direction, and the folded signature is further folded. There are provided a parallel folding device that folds in four, a chopper folding device that folds the parallel folded signature in the orthogonal direction, and the like. And these folding apparatuses are selected according to the folding specification of a signature, and are used independently, or some of them are used in combination.

  Among the folding apparatuses, the parallel folding apparatus has a structure in which a cutting cylinder, a folding cylinder, a holding cylinder, a reduction cylinder, and a transfer cylinder, which are rotationally driven, are arranged in order from the upstream side in the signature conveying direction. Then, after the printed web to be conveyed is cut between the cutting cylinder and the folding cylinder, the cut web is folded between the folding cylinder and the holding cylinder to form a signature. Next, the signature is decelerated by being transferred to the decelerating cylinder, and is conveyed to the paper discharge device via the diverging cylinder.

  Here, using FIG. 10 and FIG. 11, the signature delivery (replacement) from the gripper to the speed reduction drum will be specifically described.

  First, the cut web (not shown) is conveyed by a folding cylinder (not shown). Next, when the cut web is conveyed to a position where the folding cylinder and the holding cylinder 110 are opposed to each other, the insertion knife of the folding cylinder enters between the holding plate 111 and the holding table 112 of the holding cylinder 110, and the holding plate The signature S is formed by adding this between 111 and the holding table 112.

  Then, as shown in FIG. 10, the signature S is transported with its tip portion held between the holding plate 111 and the holding stand 112 of the holding cylinder 110. Next, when the leading end portion of the signature S is conveyed to a position where the gripper cylinder 110 and the reduction drum 120 are opposed to each other, the gripper plate 111 opens with respect to the gripper 112, and the leading end portion of the signature S is released from the gripper. .

  Then, when the leading end portion of the signature S starts to come into contact with the conveying belt 130 wound around the holding drum 110, the bent leading end portion is returned and straightened. Next, as shown in FIG. 11, the front end portion of the signature S returned straight is regulated by abutting against the contact 123 of the speed reduction drum 120, and the gripper claw 121 is closed with respect to the gripper 122. , Will be replaced.

  As described above, the web cut and held in the folding cylinder is inserted between the holding plate 111 of the holding cylinder 110 and the holding table 112 by the insertion knife, and the holding plate 111 and the holding table 112 are connected to each other. By adding this in between, the signature S is formed. That is, the holding plate 111 and the holding stand 112 have holding surfaces 111 a and 112 a extending in the direction in which the insertion knife of the folding cylinder advances and retreats, that is, in the radial direction of the holding cylinder 110.

  Thereby, the signature S is formed by a leading end portion sandwiched between the gripping surfaces 111a and 112b extending in the radial direction of the gripping drum 110 and a guiding portion other than the leading end portion guided by the outer peripheral surface of the gripping drum 110. It will be formed in a substantially L shape, and the guide S will move so as to be pulled downstream in the rotational direction of the gripper cylinder 110 due to the stiffness of the signature S itself. As a result, a bulging portion Sa is formed on the upstream side in the rotational direction of the gripping cylinder 110 from the tip portion of the signature S, that is, on the downstream side in the rotational direction of the gripping cylinder 110 from the guide portion of the signature S. In this way, when the bulging portion Sa is formed in the signature S that has been held, there is a risk that the signature delivery accuracy for delivering the signature S from the gripping cylinder 110 to the speed reduction drum 120 may be affected.

  Therefore, a conventional folding device of a folding machine is provided with a conveying device that conveys a signature between adjacent cylinders while suppressing swelling from the upstream cylinder in the signature conveying direction to the downstream cylinder in the signature conveying direction. I am doing so. Such a conventional signature conveying apparatus is disclosed in, for example, Patent Document 1.

No. 7-54205

  However, the amount of swelling of the bulging portion Sa of the signature S varies depending on the material and thickness of the sheet-like material (web), folding specifications, and the like. For example, when the material is hard, when the thickness is thick, or when the number of times of folding is large, the most downstream side in the rotation direction of the holding cylinder 110 in the guide portion of the signature S with respect to the outer peripheral surface of the holding cylinder 110 is concerned with the folding. Since it becomes easy to float by the stiffness of the Ding S, the amount of swelling tends to increase (indicated by a two-dot chain line in FIG. 12). On the other hand, when the material is soft, when the thickness is thin, or when the number of folding is small, the guide portion of the signature S is likely to be along the outer peripheral surface of the gripper cylinder 110, so that the amount of bulge tends to be small. (Indicated by a broken line in FIG. 12).

  As described above, when the bulging amount of the bulging portion Sa of the signature S changes depending on the material, thickness, and folding specifications of the sheet-like material (web), in the above-described signature delivery between the cylinders, FIG. As shown in FIG. 13, when the bulge amount is large, the open end portion of the signature S violently hits the contact 123 of the speed reduction drum 120 (indicated by a two-dot chain line in FIG. 13). On the other hand, when the bulge amount is small, the open end portion of the signature S does not hit the abutment 123 of the reduction cylinder 120, and in some cases, it cannot be added to the reduction cylinder 120 (FIG. 13). (Indicated by broken lines)

  In the conventional signature conveying apparatus described above, a brush guide that is curved along the outer peripheral surface of the body is provided to suppress the swelling of the conveyed signature. However, this brush guide is fixed, and cannot cope with the bulge of the signature that changes according to the material and thickness of the sheet-like material (web), the folding specifications, and the like.

  Accordingly, an object of the present invention is to solve the above-described problems, and to provide a signature conveying apparatus capable of improving the accuracy of signature delivery between cylinders.

The signature conveying apparatus according to the first invention for solving the above-mentioned problems is as follows.
A folding cylinder having a holding means for holding the sheet-like material to be conveyed and an insertion knife;
A holding cylinder having first holding means formed on a signature by changing the sheet-like material held by the holding means so as to be folded with the insertion knife so as to face the folding cylinder. When,
A conveying cylinder having second holding means for receiving a signature held by the first holding means opposite to the holding cylinder;
Rotation phase changing means for changing the rotation phase between the holding cylinder and the transfer cylinder;
The rotational phase changing means is
First driving means for rotationally driving the holding cylinder and the conveying cylinder;
A differential provided between the holding cylinder and the conveying cylinder;
And a second driving means for rotationally driving the differential device.

The signature conveying apparatus according to the second invention for solving the above-mentioned problems is as follows.
In the signature conveying apparatus according to the first invention,
The first holding means includes a holding plate having a holding surface extending in a radial direction of the holding cylinder and a holding stand.

A signature conveying apparatus according to a third invention for solving the above-mentioned problems is as follows.
In the signature conveying apparatus according to the first invention,
Belt means is provided, which is wound around the holding cylinder and raises the tip of a signature which is passed from the first holding means to the second holding means.

  Therefore, according to the signature conveying device of the present invention, the rotational phase of the conveying cylinder is changed with respect to the rotational phase of the holding cylinder according to the material and thickness of the sheet-like material (web) and the folding specifications. As a result, the signatures held by the holding drum can be stably received by the transport drum, so that the accuracy of signature delivery between the drums can be improved.

  Hereinafter, the signature conveying apparatus according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram of a folding machine equipped with a signature conveying device according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a rotational phase changing device, and FIG. 3 is a block diagram showing a connection state of a control device, 4 is a diagram showing a state of changing the rotational phase of the reduction cylinder with respect to the rotational phase of the holding cylinder, FIG. 5 is a diagram showing a holding operation of the reduction cylinder after the rotational phase is changed, and FIG. 6 is a diagram between the holding cylinder and the reduction cylinder. FIG. 7 is an explanatory diagram of the replacement operation following FIG. 6, FIG. 8 is an explanatory diagram of the replacement operation following FIG. 7, and FIG. 9 is an explanatory diagram of the replacement operation following FIG. is there.

  As shown in FIG. 1, a folding machine of a web-fed rotary printing press is provided with a parallel folding device 1, chopper folding devices 2 and 3, and a rotation phase change device (rotation phase change means) 4. The web (sheet-like material) W that has been dried and cooled after printing passes through the parallel folding device 1 and the chopper folding devices 2 and 3 of the folding machine, and is cut to a predetermined length, and then the width direction thereof. Or it is folded in the length direction and formed on the signature S.

  Two sets of upper and lower upper tension rollers 11a and 11b and lower tension rollers 12a and 12b, which are opposed to each other so as to sandwich the printed web W to be conveyed, are rotatably supported on the entrance side of the folding path. Yes. Further, between the upper tension rollers 11a and 11b and the lower tension rollers 12a and 12b, a horizontal sewing machine cylinder 13b and a receiving cylinder 13a thereof are rotatably supported so as to be opposed to each other so as to sandwich the web W to be conveyed. ing.

  A sewing blade (not shown) extending in the axial direction is provided on the outer peripheral portion of the horizontal sewing cylinder 13b, while a blade receiver (not shown) extending in the axial direction is provided on the outer peripheral portion of the receiving cylinder 13a. Yes. That is, the web W conveyed between the receiving cylinder 13a and the horizontal sewing machine cylinder 13b has perforations formed in the width direction by the cooperation of the sewing blade and the blade receiver.

  A parallel folding device 1 is provided downstream of the lower tension rollers 12a and 12b in the signature conveying direction. The parallel folding device 1 includes a cutting cylinder 21, a folding cylinder 22, a holding cylinder 23, a reduction cylinder (conveying cylinder) 24, an upper transfer cylinder 25, and a lower transfer cylinder 26 in this order from the upstream side in the signature conveying direction. These are supported rotatably in the direction of the arrow shown in the figure.

  A cutting cylinder 21 is rotatably supported on the upstream side in the signature conveying direction in the parallel folding device 1. A cutting blade 31 extending in the axial direction is provided at a position where the outer peripheral surface of the cutting cylinder 21 is equally divided in the circumferential direction.

  The cutting cylinder 21 is opposed to a folding cylinder 22 that is rotatably supported. At the position where the outer peripheral surface of the folding cylinder 22 is divided into two equal parts in the circumferential direction, a blade receiver 32 extending in the axial direction and a plurality of needles (holding in the axial direction in the vicinity of the blade receiver 32) Means) 33. Further, an insertion knife 34 extending in the axial direction is provided at a position where the outer peripheral surface of the folding cylinder 22 is equally divided in the circumferential direction and between the adjacent needles 33 is equally divided in the circumferential direction. It has been.

  A holding cylinder 23 that is rotatably supported is opposed to the folding cylinder 22 on the downstream side in the rotation direction of the folding cylinder 22 from a position facing the cutting cylinder 21. A plurality of holding portions (first holding means) 35 arranged in parallel in the axial direction are provided at positions at which the outer peripheral surface of the holding body 23 is equally divided in the circumferential direction.

  As shown in FIGS. 6 to 9, the holding portion 35 includes a holding plate 35a that is rotatably supported, and a holding table 35b that is fixedly supported. By rotating 35a, the holding plate 35a opens and closes with respect to the holding table 35b. The holding plate 35a and the holding table 35b are formed with holding surfaces (holding surfaces) 35c and 35d extending in the radial direction of the holding cylinder 23, and the holding plate 35a is closed with respect to the holding table 35b. The signature S is held between the holding surfaces 35c and 35d.

  The holding cylinder 23 is opposed to a reduction cylinder 24 that is rotatably supported on the downstream side in the rotation direction of the holding cylinder 23 with respect to the position facing the folding cylinder 22. A plurality of first holding portions (second holding means) 38 arranged in parallel in the axial direction are provided at positions where the outer peripheral surface of the speed reduction drum 24 is equally divided in the circumferential direction. As shown in FIGS. 6 to 9, the first holding portion 38 has a holding claw 38 a that is rotatably supported, a holding plate 38 b that is fixedly supported, and an outer circumferential surface of the speed reduction drum 24, radially outward. The holding claw 38a is configured to open and close with respect to the holding table 38b when the holding claw 38a is rotated by a cam mechanism or the like (not shown).

  Furthermore, the outer circumferential surface of the speed reduction drum 24 is divided into two equal parts in the circumferential direction, and a plurality of adjacent first holding portions 38 are divided into two equal parts in the circumferential direction. A second holding portion (second holding means) 39 is provided. The second holding portion 39 has the same configuration as the first holding portion 38, and the holding claw is opened and closed with respect to the holding stand by rotating the holding claw by a cam mechanism (not shown) or the like. ing. The holding part 35 of the holding cylinder 23 and the first holding part 38 and the second holding part 39 of the speed reduction cylinder 24 are alternately arranged in the width direction of the signature S.

  An upper transfer drum 25 that is rotatably supported is opposed to the speed reduction drum 24 on the upstream side in the rotation direction of the speed reduction drum 24 from a position facing the gripping drum 23. A plurality of upper holding portions 40 arranged in parallel in the axial direction are provided at positions at which the outer peripheral surface of the upper transfer cylinder 25 is divided into two equal parts in the circumferential direction. A plurality of upper conveying belts 41 are stretched in parallel in the axial direction of the upper transfer drum 25 on the outer peripheral portion of the upper transfer drum 25. The upper conveying belt 41 is alternately arranged with the upper holding portions 40 in the axial direction of the upper transfer drum 25, and is wound around a groove portion (not shown) that is recessed from the outer peripheral surface of the upper transfer drum 25.

  Furthermore, a lower transfer drum 26 that is rotatably supported is opposed to the speed reduction drum 24 on the upstream side in the rotation direction of the speed reduction drum 24 with respect to the position facing the upper transfer drum 25. A plurality of lower holding portions 42 arranged in parallel in the axial direction are provided at positions where the outer peripheral surface of the lower transfer drum 26 is equally divided in the circumferential direction. A plurality of lower transport belts 43 are stretched in parallel in the axial direction of the lower transfer drum 26 on the outer peripheral portion of the lower transfer drum 26. The lower conveying belt 43 is alternately arranged with the lower holding portions 42 in the axial direction of the lower transfer drum 26, and is wound around a groove portion (not shown) that is recessed from the outer peripheral surface of the lower transfer drum 26.

  The upper and lower holding portions 40 and 42 of the upper and lower transfer drums 25 and 26 have the same configuration as the first and second holding portions 38 and 39 of the speed reduction drum 24. The first and second holding portions 38 and 39 of the speed reduction drum 24 and the upper and lower holding portions 40 and 42 of the upper and lower transfer drums 25 and 26 are alternately arranged in the width direction of the signature S, and the first holding portion. 38 corresponds to the upper holding portion 40, while the second holding portion 39 and the lower holding portion 42 correspond to each other.

  A plurality of rollers 36 are rotatably supported below the holding cylinder 23, and a plurality of conveying belts (belt means) 37 are provided between the rollers 36 and the holding cylinder 23. It is stretched in parallel in the axial direction. The conveyor belt 37 is looped around a groove (not shown) that is recessed from the outer peripheral surface of the holding cylinder 23, and is substantially the same speed as the circumferential speed (rotational speed) of the holding cylinder 23, and the rotation direction of the holding cylinder 23. It is arranged so as to be separated from the gripper cylinder 23 when the vicinity of the opposing position of the gripper cylinder 23 and the reduction drum 24 is passed.

  The chopper folding devices 2 and 3 are provided on the downstream side in the signature conveyance direction of the parallel folding device 1, that is, on the downstream side in the signature conveyance direction of the upper and lower transfer drums 25 and 26. The chopper folding devices 2 and 3 are disposed above the upper and lower conveyor belts 41 and 43, and the pads 51 and 53 that regulate the signature S conveyed by the upper and lower conveyor belts 41 and 43, and the pads 51 and 53. The choppers 52 and 54 perform chopper folding on the signature S regulated by the above.

  Here, in the cutting cylinder 21, the folding cylinder 22, the holding cylinder 23, the reduction cylinder 24, and the upper and lower transfer cylinders 25 and 26 of the parallel folding device 1, the adjacent cylinders are gear-connected, and the entire web-fed rotary printing press. By driving a machine drive motor (first drive means) 97, which will be described later, that drives the cylinder, the cylinders are driven to rotate in conjunction with each other. The holding cylinder 23 and the reduction cylinder 24 are gear-coupled via the rotation phase changing device 4.

  As shown in FIG. 2, a transmission gear 61 is provided on the rotating shaft (not shown) of the holding cylinder 23, while a transmission gear 62 is provided on the rotating shaft (not shown) of the reduction cylinder 24. A rotational phase changing device 4 is provided between the gears 61 and 62.

  In the rotational phase changing device 4, the intermediate shaft 71 and the rotational phase changing shaft 73 are rotatably supported by the frame 1a of the parallel folding device 1 (folder). The intermediate shaft 71 is provided with an intermediate gear 72, while the rotational phase changing shaft 73 is provided with an input gear 74, an output gear 75, and a connection gear 76. The input gear 74 and the output gear 75 are differentially provided. They are connected by a device 81.

  Further, a rotation phase changing motor (second drive means) 77 and an absolute encoder 79 are provided outside the frame 1a. The rotation phase changing motor 77 and the encoder 79 include a gear 78, 80. The transmission gear 61 meshes with the intermediate gear 72, and the intermediate gear 72 meshes with the input gear 74. Further, the output gear 75 is engaged with the transmission gear 62. Furthermore, the gear 78 meshes with the connection gear 76, and the connection gear 76 meshes with the gear 80.

  That is, the rotation of the holding cylinder 23 is transmitted to the speed reduction cylinder 24 via the rotation phase changing device 4. When the driving of the rotation phase changing motor 77 is stopped, the rotation of the holding cylinder 23 is transmitted to the speed reduction cylinder 24 as it is. On the other hand, when the rotational phase changing motor 77 is driven, a slight rotational phase difference is generated between the input gear 74 and the output gear 75 due to the deceleration action of the differential device 81, and the gripper cylinder 23. The rotational phase of the speed reduction drum 24 is changed with respect to the rotational phase. At this time, when the rotational phase changing motor 77 is driven, the rotation is transmitted to the encoder 79 via the connecting gear 76, and the rotational phase difference between the holding cylinder 23 and the reduction cylinder 24 is detected. .

  As shown in FIG. 3, the web-fed rotary printing press is provided with a control device 91, and the control device 91 drives and controls the entire printing press. The control device 91 includes an encoder 79, a sheet material material / thickness / folding specification input unit 92, a machine operation button 93, a machine stop button 94, a motor drive button 95, a motor stop button 96, and a rotation phase change. A motor 77 and a machine driving motor 97 are connected.

  The material / thickness / folding specification input unit 92 of the sheet-like material is used by the operator to input the material, thickness and folding specification of the sheet-like material (web W) to be conveyed. The machine operation button 93 and the machine stop button 94 enable operation and stop of the machine drive motor 97 that drives the entire printing press. The motor drive button 95 and the motor stop button 96 enable the rotation phase changing motor 77 to be driven and stopped. Then, the control device 91 is a signal sent from the encoder 79, sheet material / thickness / folding specification input unit 92, machine operation button 93, machine stop button 94, motor drive button 95, and motor stop button 96. On the basis of the rotation speed, the rotational phase changing motor 77 and the machine driving motor 95 are driven by outputting signals to cause the differential device 81 to decelerate, thereby reducing the rotational phase of the gripper cylinder 23. The rotational phase of the cylinder 24 is changed.

  Therefore, when printing is performed, the rotation phase of the reduction cylinder 24 is changed with respect to the rotation phase of the holding cylinder 23, and then printing is performed.

  First, after inputting the material, thickness, and folding specifications of the sheet-like material (web W) to be conveyed to the material-thickness / folding specification input unit 92 of the sheet-like material, the machine operation button 93 is turned on to turn on the printing machine. And the motor drive button 95 is turned on to drive the rotational phase changing motor 77, and the rotational phase of the reduction cylinder 24 is changed with respect to the rotational phase of the holding cylinder 23 by the differential device 81.

  Here, the material / thickness / folding specification input unit 92 of the sheet-like material is previously input with the material, thickness, and folding specifications of the reference web (folder). Also, as shown in FIG. 4, before operation, the rotational phase of the abutment 38c of the first holding cylinder 38 (the abutting of the second holding cylinder 39) of the speed reduction cylinder 24 depends on the reference material, thickness, and folding specifications. The corresponding reference position P is set.

  Then, when the input material is harder than the reference material, when the input thickness is thicker than the reference thickness, or when the input number of folds is larger than the reference number of folds, it is shown in FIG. As described above, the rotational phase of the speed reduction drum 24 is changed so that the position of the contact 38c of the first holding portion 38 rotates downstream of the reference position P by the deceleration action of the differential device 81. On the other hand, when the input material is softer than the reference material, when the input thickness is thinner than the reference thickness, or when the input number of folds is smaller than the reference number of folds, the process is shown in FIG. As described above, the rotational phase of the speed reduction cylinder 24 is changed so that the position of the abutment 38c of the first holding portion 38 rotates more upstream than the reference position P by the deceleration action of the actuator 81.

  As described above, when the change of the rotational phase of the reduction drum 24 corresponding to the material and thickness of the sheet-like object (web W) and the folding specifications is completed and the motor stop button 96 is turned ON, the rotational phase changing motor 77 is turned on. Is stopped and printing is started. Thereby, the web W dried and cooled after printing is conveyed toward the conveyance path entry side of the folding machine, and is half-folded in the width direction or folded by a former folding device (not shown) during the conveyance. Pass without being.

  Then, when the web W is conveyed between the receiving cylinder 13a and the horizontal sewing machine cylinder 13b via the upper tension rollers 11a and 11b, the web W has a predetermined interval in the length direction (the signature conveying direction). Lateral perforations are formed. Next, the web W on which the horizontal perforations are formed is conveyed to a position where the cutting cylinder 21 and the folding cylinder 22 face each other via the lower tension rollers 12a and 12b.

  When the web W is conveyed to a position where the cutting cylinder 21 and the folding cylinder 22 are opposed to each other, the cutting blade 31 of the cutting cylinder 21 and the blade receiver 32 of the folding cylinder 22 are accompanied by synchronous rotation in the opposite directions. By entering the inside, the web W is cut so as to be cut by the cooperation of the cutting blade 31 and the blade receiver 32. At the same time as the cutting is performed, the leading edge of the cut web W is held by the needle 33 of the folding cylinder 22.

  Next, when the web W cut and held by the needle 33 of the folding cylinder 22 is conveyed along the lower outer peripheral surface thereof to a position where the folding cylinder 22 and the holding cylinder 23 are opposed to each other, the web W With the synchronous rotation in the direction, the cut web W is moved between the holding plate 35a and the holding table 35b of the holding part 35 by the cooperation of the insertion knife 34 of the folding cylinder 22 and the holding part 35 of the holding cylinder 23. Can be added. At this time, the cut web W is half-folded at an arbitrary position in the signature conveying direction, that is, at a position in the center in the length direction where the horizontal perforation is formed, and the holding plate 35a and the holding table. It is added between 35b. As a result, the cut web W becomes a signature S that has been folded once in parallel (half-folded).

  Then, as shown in FIG. 6, the signature S with the tip portion held by the holding portion 35 of the holding cylinder 23 is conveyed between the holding cylinder 23 and the reduction cylinder 24 along the upper outer peripheral surface thereof. Is done. At this time, although details will be described later, a bulging portion Sa is formed on the signature S held between the holding surface 35c of the holding plate 35a and the holding surface 35d of the holding table 35b, and this bulging portion Sa is formed. Has a predetermined bulge amount.

  Next, as shown in FIG. 7, the signature S held in the holding portion 35 of the holding cylinder 23 is a position where the holding cylinder 23 and the speed reduction cylinder 24 face each other (a line connecting the centers of both cylinders 23 and 24 in the figure). When the sheet is transported to the gripper 35b, the gripper plate 35a of the gripper 35 opens with respect to the gripper 35b, and the leading end of the signature S is released from the gripper. At the same time, since the leading end portion of the signature S starts to contact the traveling conveyor belt 37, the bending at the opened leading end portion of the signature S is gradually returned and straightened.

  Further, when the holding cylinder 23 and the reduction cylinder 24 are rotated from this state, the peripheral speed of the holding cylinder 23 is faster than the peripheral speed of the reduction cylinder 24 as shown in FIG. Will catch up with the first holding portion 38 of the speed reduction drum 24. At this time, the holding claw 38a of the first holding portion 38 is open with respect to the holding table 38b, and the leading end portion of the signature S returned straight is regulated by coming into contact with the pad 38c. Immediately thereafter, the gripper claw 38a of the first gripper 38 is closed with respect to the gripper base 38b, whereby the tip portion of the signature S is replaced between the gripper claw 38a and the gripper base 38b.

  Although details will be described later, when the signature is transferred between the gripping cylinder 23 and the reduction cylinder 24 as shown in FIG. Accordingly, since the rotational phase of the reduction cylinder 24 is changed with respect to the rotational phase of the holding cylinder 23 (see FIG. 5), the signature S is moved from the holding part 35 of the holding cylinder 23 to the first of the reduction cylinder 24. The holding part 38 is stabilized and replaced.

  As shown in FIG. 9, when the speed reduction drum 24 further rotates, the signature S held in the first holding portion 38 has its leading end portion separated from the conveying belt 37, while the trailing end side (described later). The guide portion) is conveyed along the lower outer peripheral surface of the speed reduction drum 24 while being pressed against the outer peripheral surface of the speed reduction drum 24 by the conveyor belt 37.

  Next, when the signature S held in the first holding portion 38 of the speed reduction drum 24 is conveyed to a position where the speed reduction drum 24 and the upper transfer drum 25 are opposed to each other, the synchronous rotation in the opposite directions to each other is performed. The signature S is replaced by the upper holding portion 40 by the cooperation of the first holding portion 38 of the speed reduction drum 24 and the upper holding portion 40 of the upper transfer drum 25. When the signature S held in the upper holding section 40 of the upper transfer cylinder 25 is conveyed above the upper transfer cylinder 25, the signature S is released from the holding by the upper holding section 40 and the upper conveying belt 41. Is passed on.

  Next, the signature S transported by the upper transport belt 41 is regulated in contact with the abutment 51 of the chopper folding device 2 during the transport, and the chopper is folded by the lowering of the chopper 52. Then, the chopper folded signature S is discharged out of the apparatus by a paper discharge device including an impeller (not shown).

  On the other hand, when the signature S held in the second holding portion 39 of the speed reduction drum 24 is conveyed to a position where the speed reduction drum 24 and the lower transfer drum 26 are opposed to each other, they are synchronously rotated in the opposite directions. The signature S is replaced by the lower holding portion 42 by the cooperation of the second holding portion 39 of the speed reduction drum 24 and the lower holding portion 42 of the lower transfer drum 26. When the signature S held in the lower holding portion 42 of the lower transfer drum 26 is conveyed above the lower transfer drum 26, the signature S is released from the holding by the lower holding portion 42 and the lower transfer belt 43. Is passed on.

  Next, the signature S conveyed by the lower conveyance belt 43 is regulated in contact with the abutment 53 of the chopper folding device 3 during the conveyance, and the chopper is folded by the lowering of the chopper 54. Then, the chopper folded signature S is discharged out of the apparatus by a paper discharge device including an impeller (not shown).

  As described above, the signature S is alternately conveyed to the upper chopper folding device 2 and the lower chopper folding device 3. Further, the supply speed of the signature S to the chopper folding devices 2 and 3 is decelerated by the reduction cylinder 24, and the supply interval of the signature S is alternately supplied to the chopper folding devices 2 and 3. It is spreading. Thereby, even if the printing speed is set to a high speed, the chopper folding devices 2 and 3 can prevent the signatures S from colliding with each other and paper jams.

  Here, as shown in FIG. 6, when the signature S is conveyed by the holding cylinder 23, the signature S is a tip portion held between the holding surfaces 35 c and 35 d extending in the radial direction of the holding cylinder 23. And the guide portion other than the tip portion guided by the outer peripheral surface of the gripper cylinder 23 is formed in a substantially L-shape, and the guide portion is rotated by the stiffness of the signature S itself. It will be in the state which moved so that it might be pulled downstream. As a result, a bulging portion Sa is formed on the upstream side in the rotational direction of the gripping cylinder 23 from the tip portion of the signature S, that is, on the downstream side in the rotational direction of the gripping cylinder 23 from the guide portion of the signature S. In this way, when the bulging portion Sa is formed in the signature S that is held, there is a possibility that the signature delivery accuracy for delivering the signature S from the gripping cylinder 23 to the speed reduction drum 24 may be affected.

  However, the amount of swelling of the bulging portion Sa of the signature S varies depending on the material, thickness, and folding specifications of the sheet-like material (web W) being conveyed. For example, when the material is hard, when the thickness is thick, or when the number of folding is large, the most downstream side in the rotation direction of the gripper cylinder 23 in the guide portion of the signature S with respect to the outer peripheral surface of the clamper S is concerned with the folding. Since it becomes easy to float by the stiffness of the Ding S, the amount of movement of the guide portion increases, and the amount of swelling tends to increase (see FIG. 12). On the other hand, when the material is soft, when the thickness is thin, or when the number of folding is small, the guide portion of the signature S is likely to be along the outer peripheral surface of the gripper cylinder 23. Therefore, the amount of movement of the guide portion is small. There is a tendency that the amount of swelling is reduced and the amount of swelling is reduced (see FIG. 12).

  Thus, if the bulge amount of the bulging portion Sa of the signature S changes depending on the material, thickness, and folding specifications of the sheet-like material (web W), the signature between the gripping cylinder 23 and the reduction cylinder 24 is changed. Since the leading end position of the signature S is not stable in the transfer section, there is a possibility that a problem may occur in changing the holding cylinder 23 to the reduction cylinder 24. That is, when the bulge amount of the bulge portion Sa is large, the open end portion of the signature S hits the abutment 38c of the reduction drum 24 violently (see FIG. 13). On the other hand, when the bulge amount is small, the open end portion of the signature S does not hit the abutment 38c of the reduction drum 24, and in some cases, it cannot be held by the reduction drum 24 (FIG. 13). reference).

  Therefore, the rotation phase change device 4 changes the rotation phase of the reduction cylinder 24 relative to the rotation phase of the holding cylinder 23 according to the material, thickness, and folding specifications of the sheet-like material (web W) being conveyed. Thus, the position of the abutment 38c (the abutment of the second holding cylinder 39) of the first holding portion 38 is rotated from the reference position P to the upstream side in the rotation direction or the downstream side in the rotation direction.

  That is, when the material is hard, when the thickness is thick, or when the number of folding is large, the amount of movement of the guide portion of the signature S increases, and the amount of swelling of the bulging portion Sa increases. The tip portion of the signature S released from the holding portion 35 is returned straight to the downstream side in the rotation direction of the reduction drum 24 from the reference position P of the abutment 38c corresponding to the reference material, thickness, and folding specifications. Become. Therefore, as shown in FIG. 4, in the rotational phase changing device 4, the rotation of the speed reduction cylinder 24 is preliminarily performed so that the position of the abutment 38 c of the first holding portion 38 rotates downstream of the reference position P in the rotation direction. Change the phase. As a result, as shown in FIG. 5, the open end portion of the signature S is reliably replaced by the reduction drum 24.

  On the other hand, when the material is soft, when the thickness is thin, or when the number of folding is small, the amount of movement of the guide portion of the signature S is small, and the amount of swelling of the bulging portion Sa is small. The tip portion of the signature S released from the holding portion 35 is returned straight to the upstream side in the rotational direction of the reduction drum 24 from the reference position P of the abutment 38c corresponding to the reference material, thickness, and folding specifications. Become. Therefore, as shown in FIG. 4, in the rotational phase changing device 4, the rotation of the speed reduction cylinder 24 is previously performed so that the position of the abutment 38 c of the first holding portion 38 rotates upstream of the reference position P in the rotational direction. Change the phase. As a result, as shown in FIG. 5, the leading end of the opened signature S is reliably replaced by the reduction drum 24.

  Therefore, according to the signature conveying device according to the present invention, the differential device 81 of the rotational phase changing device 4 is used in accordance with the material and thickness of the sheet-like material (web W) conveyed and the folding specifications. By changing the rotational phase of the reduction cylinder 24 with respect to the rotation phase of the cylinder 23, the position of the abutment 38c of the first holding portion 38 (the abutment of the second holding cylinder 39) is made to be lower than the reference position P. It can be rotated in the direction of rotation 24 or downstream in the direction of rotation. Thereby, the front-end | tip part of signature S can be appropriately controlled to the pad 38c of the deceleration cylinder 24, and can be reliably held between the holding claw 38a and the holding stand 38b. As a result, the signature delivery accuracy between the holding cylinder 23 and the reduction cylinder 24 can be improved.

  The present invention is applicable to a parallel folding device of a folding machine capable of switching folding specifications.

It is the schematic of the folding machine provided with the conveyance apparatus of the signature which concerns on one Example of this invention. It is the schematic of a rotation phase change apparatus. It is a block diagram which shows the connection state of a control apparatus. It is the figure which showed the mode of the rotation phase change of the deceleration cylinder with respect to the rotation phase of a holding cylinder. It is the figure which showed the holding operation of the deceleration cylinder after a rotation phase change. It is explanatory drawing of the holding change operation | movement between a holding cylinder and a deceleration cylinder. FIG. 7 is an explanatory diagram of a holding change operation following FIG. 6. FIG. 8 is an explanatory diagram of a holding change operation following FIG. 7. FIG. 9 is an explanatory diagram of a holding change operation following FIG. 8. It is explanatory drawing of the holding replacement | exchange operation | movement between the holding drum and the reduction drum in the parallel folding apparatus of the conventional folding machine. It is explanatory drawing of the holding | maintenance replacement | movement operation | movement following FIG. It is the figure which showed the bulging part of the signature when it was held by the holding body. It is the figure which showed the holding operation | movement of a deceleration cylinder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parallel folding apparatus 2,3 Chopper folding apparatus 4 Rotation phase change apparatus 11a, 11b Upper tension roller 12a, 12b Lower tension roller 13a Rectal cylinder 13b Horizontal sewing cylinder 21 Cutting cylinder 22 Folding cylinder 23 Holding cylinder 24 Reduction cylinder 25 Upper transfer cylinder 26 Lower transfer cylinder 31 Cutting blade 32 Receiving blade 33 Needle 34 Insertion knife 35 Holding portion 35a Holding plate 35b Holding plate 35c, 35d Holding surface 36 Roller 37 Conveying belt 38 First holding portion 38a Holding nail 38b Holding plate 38c Applying 39 Second Holding part 40 Upper holding part 41 Upper conveying belt 42 Lower holding part 43 Lower conveying belts 51, 53 Abutment 52, 54 Chopper 61, 62 Transmission gear 71 Intermediate shaft 72 Intermediate gear 73 Rotation phase change shaft 74 Input gear 75 Output gear 76 Connection Gear 77 Rotation phase changing motor 78 Gear 79 Encoder 80 Gear 81 Differential device 91 Control device 92 Sheet material material / thickness / fold specification input section 93 Machine operation button 94 Machine stop button 95 Motor drive button 96 Motor stop button 97 Motor for driving this machine

Claims (3)

A folding cylinder having a holding means for holding the sheet-like material to be conveyed and an insertion knife;
A holding cylinder having first holding means formed on a signature by changing the sheet-like material held by the holding means so as to be folded with the insertion knife so as to face the folding cylinder. When,
A conveying cylinder having second holding means for receiving a signature held by the first holding means opposite to the holding cylinder;
Rotation phase changing means for changing the rotation phase between the holding cylinder and the transfer cylinder;
The rotational phase changing means is
First driving means for rotationally driving the holding cylinder and the conveying cylinder;
A differential provided between the holding cylinder and the conveying cylinder;
And a second drive unit that rotationally drives the differential device. In the signature conveying apparatus according to claim 1,
The first holding means includes a holding plate having a holding surface extending in a radial direction of the holding cylinder and a holding table. In the signature conveying apparatus according to claim 1,
A signature transporting device, comprising belt means that wraps around the gripper cylinder and raises a tip of a signature that is transferred from the first gripping means to the second gripping means.

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